This Fabric is AS4 Aerospace 644ksi strength carbon fiber. Commercial grade carbon fiber is 300ksi strength. This fabric normally has a width of 50″ butthis is a 4″x4″ sample with a tow size of 3k and is woven in a 2×2 twill weave. This is the most widely used weave pattern across multiple industries. This material is woven tighter than most of our competitors’ fabrics. This will help ensure a straight weave and a better looking final product.